Abstract:
They are bacteria-killers, more and more common in products we use every day and at least a million of them will fit on the head of a pin. But are silver nanoparticles safe?

Little is known about the health effects of these inventions.

"We have no idea how some of these structures interact in biological systems — nor do we understand the potential toxicological risks they impose on our environment," says James Bonner, an associate professor in the Department of Environmental and Molecular Toxicology at North Carolina State University.